"While all agreed "the hat" was the first einstein, its mirror image was required one in seven times to ensure that a pattern never repeated." The article has

"While all agreed "the hat" was the first einstein, its mirror image was required one in seven times to ensure that a pattern never repeated." The article has a small error here - it should say approximately 7. The ratio between the tiles and their mirrors is phi^4. https://cp4space.hatsya.com/2023/03/21/aperiodic-monotile/ https://cp4space.hatsya.com/2023/03/21/aperiodic-monotile/